The energy of a photon of light emitted by an electron equals the
A)energy of the level it currently occupies.
B)energy of the level it just left.
C)energy of the ground state of the atom.
D)difference in energy between two levels.

Question

Quizplus · Accepted Answer

When an electron emits a photon of light, it moves from a higher energy level to a lower energy level. The energy of the photon is equal to the difference in energy between these two levels, which is why the correct choice is D.

The Energy of a Photon of Light Emitted by an Electron